Table 1.
Demographic characteristics of people treated with or without KC in Queensland, 2010.
| Characteristics | Cases (n = 2000) | Controls (n = 2000) | p-value |
|---|---|---|---|
| Female | 984 (49.2) | 1000 (50) | 0.613 |
| Private health insurance | 553 (27.7) | 619 (31) | 0.022 |
| Born in Australia | 1728 (86.4) | 1562 (78.1) | <0.01 |
| Age group in years | <0.01 | ||
| 40–49 | 420 (21) | 616 (30.8) | |
| 50–59 | 684 (34.2) | 573 (28.7) | |
| 60–69 | 896 (44.8) | 811 (40.6) | |
| Education | 0.037 | ||
| Nil | 184 (9.27) | 152 (7.7) | |
| School certificate | 365 (18.4) | 308 (15.6) | |
| High school | 349 (17.6) | 349 (17.7) | |
| Trade | 161 (8.11) | 178 (9) | |
| Certificate or diploma | 323 (16.3) | 362 (18.3) | |
| University | 442 (22.3) | 481 (24.4) | |
| Missing | 160 8.06 | 144 7.3 | |
| Ethnicity | <0.01 | ||
| White skin | 1926 (97.1) | 1845 (93.5) | |
| Black skin | 0 (0) | 4 (0.2) | |
| Asian | 2 (0.1) | 24 (1.2) | |
| Aboriginal and Torres Strait Islander | 2 (0.1) | 4 (0.2) | |
| Other | 2 (0.1) | 7 (0.4) | |
| Mixed | 33 (1.7) | 69 (3.5) | |
| Missing | 19 (0.97) | 21 (1.1) | |
| Employment | 0.01 | ||
| Full time | 770 (38.8) | 842 (42.7) | |
| Part time | 290 (14.6) | 272 (13.8) | |
| Home | 131 (6.6) | 150 (7.6) | |
| Unemployed | 28 (1.41) | 31 (1.6) | |
| Student | 14 (0.71) | 10 (0.5) | |
| Retired | 606 (30.5) | 520 (26.3) | |
| Other | 47 (2.4) | 69 (3.5) | |
| Missing | 98 4.9 | 80 4.1 | |
Case and controls matched on 5-year age categories and gender.
p-values calculated on the basis of χ2 statistics.